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 30535-d1c72762fc) Lines: 1467 1530 95.9 % Date: 2025-10-31 09:22:06 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296410
RgX_gtofp_bit	7031676
RgX_normalize1	35900
X2XP1	5990253
ZX_Uspensky	1313848
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48651
ZX_rescale2prim	2233720
ZX_sturm	6395
ZX_sturm_i	123168
ZX_sturm_irred	116773
ZX_sturmpart	1128207
ZX_to_ZiX	16461438
ZiX_sqr	99035109
_gen_nored	11204192
_gen_one	14473027
_gen_zero	326126
_intervalcmp	0
_mp_add	24662481
_mp_cmul	34768157
_mp_mul	4374653
_mp_sqr	6298336
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537221
abs_update	8005838
abs_update_r	778663
all_roots	536119
append_clone	1614183
bkeval_single_power	5235675
check_ab	1178834
checkbound	2354797
checkvalidpol	267059
clean_roots	536166
cleanroots	231763
cmp_complex_appr	2238597
conformal_basecase	1403925
conformal_mapping	467938
conformal_pol	1404044
dblexp	6549266
dbllog2	302169115
dft	502379
dual_modulus	1012492
eval_rel_pol	13138660
fft	14160010
fft2	7462
findpower	40959210
fix_roots	537222
fix_roots1	398465
fujiwara_bound	2271726
fujiwara_bound_real	1406877
graeffe	49511646
homothetie	1610135
homothetie2n	9957882
homothetie_gauss	36499913
ind_maxlog2	902707
initdft	996364
isexactpol	239753
isexactscalar	931714
isreal	961928
isvalidcoeff	1230230
logmax_modulus	4451046
logmin_modulus	1614850
logmodulus	606763
logpre_modulus	606759
logradius	493985
lower_bound	40959122
mydbllog2i	226477004
mydbllog2r	56175595
mydbllogr	9547329
mygprec	63761307
mygprec_absolute	4339900
mygprec_special	537228
mygprecrc	215203027
mygprecrc_special	2179188
myshiftic	135851090
myshiftrc	35507626
newton_polygon	5507264
optimize_split	493991
parameters	493986
pol_to_gaussint	17589692
polgraeffe	14
polmod_to_embed	84
polrootsbound	27299
polrootsbound_i	27292
polsolve	166727
quicktofp	6978964
realroots	50627
refine_F	502374
refine_H	2460556
root_error	1912589
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289545
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494351
split_0_1	468300
split_0_2	468300
split_1	467938
split_2	493990
split_complete	1525920
split_fromU	493991
split_pols	166724
splitcauchy	166725
splitpoleval	5236007
tocomplex	1213965
update_radius	493991
usp	1126013

Generated by: LCOV version 1.16