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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30862-ea47bd413c) Lines: 1467 1530 95.9 % Date: 2026-05-06 09:26:47 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	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	5439
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15275
_sqrtnr	22668
polrootsbound_i	27230
polrootsbound	27237
RgX_normalize1	35838
ZX_realroots_irred	48652
realroots	50627
ZX_sturm_irred	116712
ZX_sturm_i	123107
polsolve	166731
split_pols	166734
splitcauchy	166745
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267361
QX_complex_roots	296336
_gen_zero	326042
fix_roots1	398827
conformal_mapping	468827
split_1	468828
split_0_1	469199
split_0_2	469199
logradius	494975
update_radius	494976
parameters	494978
optimize_split	494979
split_2	494979
split_fromU	494979
split_0	495349
dft	503375
refine_F	503376
all_roots	536413
clean_roots	536451
a_posteriori_errors	537508
fix_roots	537514
mygprec_special	537517
logmodulus	608289
logpre_modulus	608292
abs_update_r	780200
ind_maxlog2	904416
isexactscalar	934122
isreal	963804
initdft	998351
dual_modulus	1014584
usp	1126167
ZX_sturmpart	1128290
check_ab	1178917
tocomplex	1216015
isvalidcoeff	1231117
ZX_Uspensky	1313919
conformal_basecase	1406599
conformal_pol	1406718
fujiwara_bound_real	1407016
split_complete	1528204
homothetie	1613745
append_clone	1616323
logmin_modulus	1617844
root_error	1914592
mygprecrc_special	2181600
ZX_rescale2prim	2234004
cmp_complex_appr	2241664
fujiwara_bound	2274179
checkbound	2354963
refine_H	2464810
scalepol	4297815
mygprec_absolute	4344496
_mp_mul	4375576
logmax_modulus	4459123
splitpoleval	5236354
bkeval_single_power	5236868
newton_polygon	5521417
X2XP1	5991060
_mp_sqr	6299611
dblexp	6563296
quicktofp	6988242
RgX_gtofp_bit	7048894
abs_update	8022063
mydbllogr	9566978
homothetie2n	9980148
_gen_nored	11203668
eval_rel_pol	13169977
fft	14197101
_gen_one	14476091
ZX_to_ZiX	16495241
pol_to_gaussint	17629051
_mp_add	24663846
_mp_cmul	34770633
myshiftrc	35580962
homothetie_gauss	36566941
findpower	41032659
lower_bound	41032893
graeffe	49606370
mydbllog2r	57632224
mygprec	63867529
ZiX_sqr	99237620
myshiftic	136081732
mygprecrc	215593512
mydbllog2i	226781770
dbllog2	303936609

Generated by: LCOV version 1.16