Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-11-01 17:03:03 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15275
_sqrtnr	22878
polrootsbound_i	27800
polrootsbound	27807
RgX_normalize1	36408
ZX_realroots_irred	48669
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166988
split_pols	166988
splitcauchy	166988
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268043
QX_complex_roots	297213
_gen_zero	326083
fix_roots1	398951
conformal_mapping	469141
split_1	469141
split_0_1	469513
split_0_2	469513
logradius	495272
optimize_split	495272
parameters	495272
split_2	495272
split_fromU	495272
update_radius	495272
split_0	495644
dft	503714
refine_F	503714
all_roots	537400
clean_roots	537442
a_posteriori_errors	538501
fix_roots	538501
mygprec_special	538501
logmodulus	608827
logpre_modulus	608827
abs_update_r	781164
ind_maxlog2	904900
isexactscalar	934563
isreal	964413
initdft	998986
dual_modulus	1015252
usp	1127884
ZX_sturmpart	1129016
check_ab	1179647
tocomplex	1219411
isvalidcoeff	1235245
ZX_Uspensky	1315116
conformal_basecase	1407542
conformal_pol	1407661
fujiwara_bound_real	1408224
split_complete	1529789
homothetie	1614950
logmin_modulus	1618147
append_clone	1618814
root_error	1919293
mygprecrc_special	2185085
ZX_rescale2prim	2237682
cmp_complex_appr	2249863
fujiwara_bound	2276734
checkbound	2356424
refine_H	2466381
scalepol	4300662
mygprec_absolute	4356201
_mp_mul	4430508
logmax_modulus	4461156
bkeval_single_power	5250337
splitpoleval	5250337
newton_polygon	5526653
X2XP1	6001036
_mp_sqr	6349851
dblexp	6569433
quicktofp	6999951
RgX_gtofp_bit	7056075
abs_update	8028380
mydbllogr	9574074
homothetie2n	9987809
_gen_nored	11267916
eval_rel_pol	13181540
fft	14225734
_gen_one	14524586
ZX_to_ZiX	16455391
pol_to_gaussint	17642696
_mp_add	24942085
_mp_cmul	35116676
myshiftrc	35615935
homothetie_gauss	36603000
findpower	41064156
lower_bound	41064156
graeffe	49674188
mydbllog2r	58107839
mygprec	63982097
ZiX_sqr	99348376
myshiftic	136510897
mygprecrc	215741705
mydbllog2i	227081449
dbllog2	304772928

Generated by: LCOV version 2.0-1