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 30536-6f6fcf9613) Lines: 1467 1530 95.9 % Date: 2025-11-02 09:21:49 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296419
RgX_gtofp_bit	7031551
RgX_normalize1	35901
X2XP1	5990236
ZX_Uspensky	1313868
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5390
ZX_realroots_irred	48654
ZX_rescale2prim	2233771
ZX_sturm	6395
ZX_sturm_i	123172
ZX_sturm_irred	116777
ZX_sturmpart	1128224
ZX_to_ZiX	16457193
ZiX_sqr	99027020
_gen_nored	11201211
_gen_one	14472181
_gen_zero	326151
_intervalcmp	0
_mp_add	24660884
_mp_cmul	34763067
_mp_mul	4374504
_mp_sqr	6298328
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537226
abs_update	8005095
abs_update_r	778662
all_roots	536124
append_clone	1614182
bkeval_single_power	5235425
check_ab	1178850
checkbound	2354828
checkvalidpol	267060
clean_roots	536168
cleanroots	231763
cmp_complex_appr	2238537
conformal_basecase	1403888
conformal_mapping	467926
conformal_pol	1404007
dblexp	6549042
dbllog2	302103588
dft	502364
dual_modulus	1012448
eval_rel_pol	13138113
fft	14159155
fft2	7462
findpower	40957380
fix_roots	537222
fix_roots1	398464
fujiwara_bound	2271769
fujiwara_bound_real	1406898
graeffe	49505523
homothetie	1610085
homothetie2n	9957601
homothetie_gauss	36498409
ind_maxlog2	902675
initdft	996341
isexactpol	239753
isexactscalar	931714
isreal	961903
isvalidcoeff	1230235
logmax_modulus	4450911
logmin_modulus	1614795
logmodulus	606753
logpre_modulus	606753
logradius	493973
lower_bound	40957428
mydbllog2i	226443498
mydbllog2r	56174346
mydbllogr	9546594
mygprec	63757547
mygprec_absolute	4339996
mygprec_special	537232
mygprecrc	215187810
mygprecrc_special	2179184
myshiftic	135801413
myshiftrc	35506682
newton_polygon	5507190
optimize_split	493978
parameters	493979
pol_to_gaussint	17589032
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166720
quicktofp	6979051
realroots	50627
refine_F	502366
refine_H	2460486
root_error	1912592
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289397
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494341
split_0_1	468285
split_0_2	468286
split_1	467926
split_2	493976
split_complete	1525907
split_fromU	493978
split_pols	166726
splitcauchy	166728
splitpoleval	5235072
tocomplex	1213954
update_radius	493978
usp	1126055

Generated by: LCOV version 1.16