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: 2026-09-01 17:01:49 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	15274
_sqrtnr	22877
polrootsbound_i	27800
polrootsbound	27807
RgX_normalize1	36408
ZX_realroots_irred	48669
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166990
split_pols	166990
splitcauchy	166990
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268043
QX_complex_roots	297214
_gen_zero	326083
fix_roots1	398951
conformal_mapping	469134
split_1	469134
split_0_1	469506
split_0_2	469506
logradius	495263
optimize_split	495263
parameters	495263
split_2	495263
split_fromU	495263
update_radius	495263
split_0	495635
dft	503704
refine_F	503704
all_roots	537401
clean_roots	537443
a_posteriori_errors	538502
fix_roots	538502
mygprec_special	538502
logmodulus	608815
logpre_modulus	608815
abs_update_r	781164
ind_maxlog2	904868
isexactscalar	934563
isreal	964397
initdft	998967
dual_modulus	1015221
usp	1128001
ZX_sturmpart	1129056
check_ab	1179687
tocomplex	1219401
isvalidcoeff	1235245
ZX_Uspensky	1315157
conformal_basecase	1407521
conformal_pol	1407640
fujiwara_bound_real	1408266
split_complete	1529772
homothetie	1614909
logmin_modulus	1618103
append_clone	1618803
root_error	1919283
mygprecrc_special	2185075
ZX_rescale2prim	2237973
cmp_complex_appr	2249812
fujiwara_bound	2276778
checkbound	2356504
refine_H	2466344
scalepol	4300593
mygprec_absolute	4356167
_mp_mul	4430508
logmax_modulus	4461050
bkeval_single_power	5250403
splitpoleval	5250403
newton_polygon	5526553
X2XP1	6001735
_mp_sqr	6349893
dblexp	6569293
quicktofp	7000168
RgX_gtofp_bit	7055962
abs_update	8028260
mydbllogr	9573928
homothetie2n	9987603
_gen_nored	11268048
eval_rel_pol	13181235
fft	14225464
_gen_one	14524760
ZX_to_ZiX	16453196
pol_to_gaussint	17642285
_mp_add	24942127
_mp_cmul	35116850
myshiftrc	35615126
homothetie_gauss	36602131
findpower	41063181
lower_bound	41063181
graeffe	49673013
mydbllog2r	58106794
mygprec	63981081
ZiX_sqr	99346026
myshiftic	136507282
mygprecrc	215733304
mydbllog2i	227074330
dbllog2	304762062

Generated by: LCOV version 2.0-1